Fix for Affliction PVP

[Dotdoktor-outland]

This is relevant for Battlegrounds as well

Fix for Affliction PVP

Affliction currently has no representation in PVP but that can easily be fixed. (PVP talent) Unstackable but stronger Unstable Affliction. Makes Unstable Affliction unable to stack but greatly increase its duration and damage (like the Destruction PVP talent that removes the cleave ability but increases chaos bolt dmg). This is reasonable because Affliction currently needs around 5x UA hardcasts to create pressure and that can all be removed with a single dispel - not to mention being close …